Type-writing machine.



D. A. CARPENTER.

TYPE WRITING MACHINE.

APPLICATION FILED JAN. 12, 1912.

3 SHEETE-SHEET 1.

HISATTURNEY Patented Apr. 1, 1913.

' D. A; CARPENTER.

TYPE WRITING MACHINE.

APPLICATION FILED JANJZ, 1912 Patented Apr. 1,1913.

H15 ATTURNEY D. A. CARPENTER.

TYPE WRITING MACHINE.

APPLIOATION FILED JAN.12, 1912.

r Patented Apr. 1, 1913.

INVENTDRL AM' ,M

WITRIEEEE5= 5%M HISATTEIRNEIY:

UNITED STATES PATNr Fries.

DANIEL A. CARPENTER, OF NEW YORK, N. Y., ASSIGNOR, BY IVTESNE ASSIGNMENTS,

1T0 UNION TYPEWRITER COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORA- 'IION OF NEW JERSEY.

To all whom it may concern Be it known that I, DANIEL A. CARPENTER, citizen of the United States, and resident of the borough of' Manhattan, city of New .York, in the county of New York and State of New York, have inventeck certain new and useful Improvements in ype-Writing Machines, of which the following is a specification.

This invention relates especially to improvements in the construction and arrange.- ment of the key levers of front-stroke type bar machines, the main object being to produce a system of key levers adapted to do Work which is commonly done by key levers and sub-levers combined, and to act so as not to subject any of the type bars or other actuating mechanism to serious torsional stress. v

The invention consists of a system of key levers, composed of levers constructed and arranged as hereinafter described and-specified in the claims.

On the accompanying sheets of drawings on which like reference numerals designate: like parts of different views, Figure 1 1s a' front elevation of a system of key levers, a type bar segment and connecting links, and

a front and sectional elevation of a machine frame, the section being on the planes w-w' of Fig. 2. Fig. 1 is a perspective of fragments of three of the key levers.

The parts of the machine which are not shown may be of common and well known construction. The frame and shifting segment are those of some of the early forms of the Monarch machine, except that the.

base 1 of'the frame, on which are the posts 2 that support the top plate 3, is deeper than the base of Monarch frames. The type bars which are indicated in Fig. 1 by characters which the type bear, are pivoted on a common wire which lies in a groove in the seg- Specification of.Letters Patent.

Application filed January 12, 1912. Serial No. 670,767.

TYPE-WRITING MACHINE.

Patented Apr. 1, 1913.

ment 1 and which is secured therein by nuts 5, the type bars fitting loosely in radial slots in the segment and having arms to which are attachedthe connecting links 6 through which'the type bars are actuated by the key levers. This system of key levers is suitable for use in machines in which the platen is shifted when writingin upper case characters is to be done, as well as in machines in which the segment and type bars are shifted forwriting in upper case.

The'key levers are made from fiat sheet metal, and mounted on a support composed of four rods or fulcrums 7, which preferably fit at their ends in blocks 8 that are fastened by screws to the sides of the base 1, the blocks, rods and levers all being removable together from the base, in which they can also be readily inserted and secured after they have beenassembled. The key levers are arranged in four groups, each group having a separate fulcrum, the levers whose heads form the upper bank of the keyboard being one group, mounted on the uppermost rod 'or fulcrum 7, the levers whose heads form the next bank being another group, mounted on the next fulcrum 7, the levers whose heads form the next bank being another group mounted on the nextfulcrum 7, and the levers whose heads form the lowest bank being another group mounted on the lowest fulcrum. The levers of the first mentioned group have curved front arms 9 and upwardly extending arms 10, the arms of each lever being united in the part 11 which is behind the fulcrums and from which the fgont arm 9 extends under the fulcrums and forward to the keyboard, while the arm 10 extends forward from the part 11 and then upward, the upper ends of the arms 10 being the upper ends of the levers of the group and being connected with type bars by links 6. Each of these levers comprises also two forwardly projecting branches 12 and 13, which are formed on the part 11 and project from it to'the upper fulcrum 7 which passes through them at their front ends and forms a pivotal support therefor and for the rest of the lever. The branches 13 may be formed on the rear edges of the parts 11 and bent across those parts as shown, or may be made in separate pieces and riveted or lower edges of the branches 13 are to be higher than the upper edges of the branches 12, so that one lever will not interfere with another, as'will be understood when their operation is considered.

The'levers whose heads form the next to the highest bank in the keyboard have curved front arms 14 and upwardly extending arms 15, the arms of each. of these levers o'being united in the part 16, which is simi lar to the parts 11 of the levers above described, but which is in front of instead of behind the fulcrums 7. The arms 15 of these levers extend backward from the parts 15 16 and then upward, their upper ends being the upper ends of the levers of the group and being connected with type bars by links 6. Each of these levers comprises two rearwardly projecting branches 17 and 18, which mare formed on the part 16 and are similar to the branches 12 and13 of the levers that are mounted onthe uppermost fulcrum, and these branches 17 and 18 project from the parts 16 to the fulcrum 7 which is next to the highest and which passes through them at their rear ends and forms a pivotal support for the levers which include these ,branches.

The levers whose heads form the next to the lowest bank in the keyboard have curved front arms 19-and upwardly extending arms .20, the arms of each of these levers being united in the part 21, which is similar to the parts 11 of the levers whose heads form the upper bank in the keyboard, the parts 21 being behind the fulcrnms 7, and parallel to and at the sides of the parts 11, as a r pears by Fig. 3. The arms 20 extend forward from the parts 21 and then upward, their upper ends being the upper ends of the'levers of the group and being connected with type bars by links 6. Each of the levers of this group has two forwardly projecting branches 22 and 23 which are formed on the parts 21 and are similar to the branches 12 and 18 of the levers of the first described group, and the branches 22 and 23 project from the pivots 21' to the fulcrum 7 which is next to the .lowest and which passes through them at their front ends and forms a pivotal support for the levers which include these branches. The levers whose heads form the lowest bank in the keyboard have curved front arms 24 and upwardly extending arms 25, the arms of each of these levers being united in the part 26 which is similar to the parts 11, 16 and 21 of the levers of the three other groups, the parts 26 being in front of the fulcrums 7, and parallel to and at the sides of the parts 16, as appears by Fig. 23. The arms 25 extend backward from the parts 26 and then upward, their upper ends being the upper ends of the levers of the group 66 and being connected with type bars by links 6. Each of the levers of this group has two rearwardly projecting branches 27 and 28' branches 12, 17, 22 and 27 not only project forward or backward from those parts of the levers on which they are formed, but also project laterally therefrom, so that they are cut at oblique angles byyertical planes which are per endicular to the axis of the platen 29, an branches of levers of each group cross branches of other levers of the group, and the upwardly extendin arms of some of the levers at each,side of the s stern are inclined inward so that the wi th of the system at the upper ends of those arms is less than a and approximately equal to the width of the set of type bars, the upper end of each of the upwardly. extending arms being di rectly or almost directly in front of the type bar arm to which it is connected and be tween planes that cut the bearings of the key lever and are perpendicular to its pivotal axis. It will be seen that the lateral branches of several levers at each side of the system all project toward the middle thereof, whereas each of the other levers has branches that project both toward and from the middle, or else to opposite sides of the middle, of the system. The relation of the fulcrums 7 to the key heads of the levers is such that when any key is depressed to its lowest position it crosses the horizontal plane that contains the axis of the fulcrum of the lever, the elevations of'the fulcrums varying to the same extent as do the elevations of the key-heads of the different banks. Combs 30'and 31 (Fig. 2) through which the key levers pass, keep them from working to the right or left of their proper positions, and render it unnecessary to put spacing sleeves or other similar devices on the tulcrums between the branches of the levers. The front arms of the lovers rest on restoring springs 32, which are attached to a cross bar 33, the levers being normally held by these springs in contact with a padded stop (Fig. 2).

The arrangement of the branches of three of the levers which are mounted on the uppermost fulcrum is especially illustrated in Fig. 4, which shows Fragments of the levers which actuate the type bars that write the characters: 9, and

It is to be understood that the invention might be embodied in mechanisnr(littering its width at the keyboard,

more or less in details of construction and I arrangement of parts from that shown and Specifically described herein.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, a system of key levers including levers having laterally projecting branches which are cut at oblique angles by vertical planes that are perpendicular to the axis of the platen, some of said branches crossing parts of other levers and all of the branches forming part of the means by which the levers that include them are pivotally supported in the machine, said system comprising groups of key levers and said groups having difierent fulcrums.

2. Ina typewriting machine, a system of key levers including levers having laterally projecting branches which are cutat oblique angles by vertical planes that are perpendicular to the axis of the platen, some of said branches crossing parts of other levers and all of the branches forming part of the means by which the levers that include them arepivotally supported in, the machine, said system comprising groups of key levers and said groups having fulcrums which are at different elevations.

3- In a typewriting machine, a system of key levers including levers having laterally projecting branches which are cut at obliqueangles by vertical planes that are perpendicular to the axis of the platen, some of said branches crossing parts of other levers and all of the branches forming part of the means by which the levers that include them are pivotally supported in the ma chine, said system comprising four groups of key levers and said groups having four fulcrums. v

4. In a typewriting machine, a system of key levers including levers having laterallyprojecting branches which are cut at oblique angles by vertical planes that are perpendicular to the axis of the platen, some of said branches crossing parts of other levers and all of the branches forming part of the means by which the levers that include them are pivptally supported in the machine, said system comprising four groups of key levers and said groups having four fulcrums which are at difierent elevations.

In a typewriting machine, a system of key levers including levers having laterally projecting branches which are cut at oblique angles by vertical planes that are perpendicular to the axis of the platen, some of said branches crossing parts of other leversand all of the branches forming part of the means by which the levers that include them are pivotally supported in the machine, I said system comprising four groups of key levers and said groups having branches that connect said ing four fulcrums which are at different key levers having branches that connect the other parts of the keylevers with their hearing support, some of said branches extending to said support from one sid thereof and others extending to it from the opposite side thereof.

7 In a typewriting machine, a system of key levers arranged in groups, each group having a separate fulcrum, said key levers having parts from which project branches that connect said'parts with the fulcrums, some of said parts being at one side and the other at the opposite side of the ful- CI'UIDS.

8. In a typewriting machine, a system of key levers arranged in four groups, each group having a separate fulcrum, the key levers of two of the groups having parts that cross the fulcrums at one side thereof, and the key levers .of the two other grou 8 having parts that cross the fulcrums at t e other side thereof, and said key levers havthe fulcrums.

9. In a typewriting machine, a system of key levers arranged in groups, each group having a se arate fulcrum and the fulcrums being at di erent elevations, the key levers of some of the groups having parts that extend in front of the fulcrums and have rearwardly projecting branches, and the other key levers having parts that extend behind the fulcrums and have forwardly projecting branches, the branches of each group tending to'and being connected with the fulcrum of that group.

10. In a typewriting machine, a system of key levers arranged in four groups, each group having a separate fulcrum and the fulcrums being at different elevations, the key levers of two of the groups having parts that extend in front of the fulcrums and have rearwardly projecting branches, and

being connected with the fulcrum of that group.

11. In a typewriting machine, a system of key levers arranged in four groups, each group having a separate fulcrum, thefulcrums being at different elevations, the key levers of two of the groups having parts that extend in front of the fulcrums and have rearwardly projecting branches, and the key levers of the other two groups having parts that extend behind the fulcrums and have forwardly projecting branches, the

rearwardly projecting branches extending parts with upwardly to and being connected with fulcrums that are respectively above and below another fulcrum, and the forwardly projecting branches extending to and being connected with fulcrums that 'are respectively above and below another fulcrum.

12. In a typewriting machine, a system of key levers arranged in groups, each group having a separate fulcrum and including levers having branches which cross one an other and by which the levers that include them are pivotally supported in the machine.

13. In a typewriting machine, a system of key levers including levers having laterally projecting branches and upwardly extending arms, each of these levers having two bearings, one of which is in a laterally projecting branch said branches being cut at oblique angles by vertical planes. that are perpendicular to the axis of the 'laten and some of said branches crossing parts of other levers, the upper end of each of the extending arms being between planes that cut the bearings of the lever and that are perpendicular to its pivotal axis.

14. In a'typewriting machine, a system of key levers arranged in groups, each group havinga. separate fulcrum and including levers nving branches which cross one an other, each of these levers having two hear- I lngs, one of which is in a laterally projecting branch, and having an upwardly extending arm, the upper end of each of these arms being between planes that cut the bearings of the lever and that are perpendicular to its pivotal axis.

15; In a typewriting machine, a system of key levers having upwardly extending arms, the width of the system at the up er ends of said arms being less than its width at the keyboard, each key lever having two bearings and the upper end of each of said. arms being between planes that cut the bearings of the lever and that are perpendicular to its pivotal axis.

16. In a typewriting machine, a system of key levers having upwardl extending arms several levers at each si e of the system having inwardly projecting lateral branches, each of these levers having two bearin one of which is in a lateral branch, and t e upper end of the upwardly extending arm of each of these several levers being between planes that cut the bearings of the lever and are perpendicular to its pivotal axis.

Signed at the borough of Manhattan, city of New York, in the county of New York, and State of New York,.this 11th day of January A. D. 1912. l

DANIEL A.-CARPENTER.

Witnesses:

M. F. HANNWEBER, CHARLES E. SMITH. 

